首页|Beetroot Juice Additive in Chloride Brines Reduces Damage of Concrete Exposed to Freeze-Thaw Cycles

Beetroot Juice Additive in Chloride Brines Reduces Damage of Concrete Exposed to Freeze-Thaw Cycles

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  • NETL
  • NSTL
  • Asce-Amer Soc Civil Engineers
This work investigated whether and how a common agro-based additive, beetroot juice, alters the detrimental effects of chloride brines on the durability of cement concrete, by evaluating the frost resistance of ordinary portland cement concrete in various chloride brines. The presence of beetroot juice greatly slowed the ingress of Cl~ ions and mitigated the leaching of Ca~(2+), thus effectively mitigating the scaling-induced mass loss, strength reduction, and gas permeability change of the concrete. The microscopic investigation, including scanning electron microscopy, Fourier-transform infrared spectroscopy, and electron probe microanalysis, also proved that beetroot juice mitigated the degradation of C-S-H gel and C-A-S-H gel on the concrete surface and inhibited the formation of oxychloride and trichloroaluminate crystals, as confirmed by the lower Na(Mg)/Ca and Na(Mg)/(Si + Al) molar ratios in the deicer-weathered concrete. This study sheds light on the mechanistic roles of beetroot juice in improving the frost resistance of concrete in chloride-laden cold regions.

Beetroot juiceSalt scalingDeicerFreeze-thaw damageMagnesium chlorideSodium chlorideConcrete durability

Liang Fan、Zhipeng Li、Sen Du、Xianming Shi

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Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China||National Center for Transportation Infrastructure Durability and Life-Extension, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164

National Center for Transportation Infrastructure Durability and Life-Extension, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164

National Center for Transportation Infrastructure Durability and Life-Extension, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164||School of Civil Engineering and Mechanics, Yanshan Univ.,Qinhuangdao 066004, China

2024

10.1061/JMCEE7.MTENG-16378

Journal of materials in civil engineering

Journal of materials in civil engineering

EISCI
ISSN：0899-1561
年,卷(期)：2024.36(2)
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